For example, would it work on an Angel/Bob advanced chem plant, with 3 fluid inputs, 3 fluid outputs, and solids in and out?

Also, is it only for tweaking existing recipes, or can we create new ones?

(My plan, in a SeaBlock mega mega base, is to replace a huge, often-repeated, high-ups block with a new recipe in 1 machine, then throw a bunch of machines in a block, and a bunch of beacons where they won't affect anything, to match the infrastructure and power cost. The block needs 3 fluid inputs and 3 fluid outputs.)

As far as I know, this is compatible with any mod, since all it's changing is the recipes. As long as you don't make it take more fluid ingredients/products than it has pipe connections, it should be fine.

New recipes are something I do want to add, however I haven't gotten around to it yet. That and a couple other things are on my todo list, but it requires a little bit of restructuring of things internally and I needed to take a break from making this mod.

The alternative solution I can offer right now is to either find a recipe also in the machine that you're not going to use, if that exists, and then change it to be the recipe you want it to be, or you can simply wait until you reach megabase levels of production and change the existing recipe out after a certain point.

Thanks! I'll have to think about it a bit more. I don't want to give up the old recipes in order to make new ones.

Who knows...maybe it's time for me to learn to mod and make my own recipes from scratch.